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complex query in arel
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| def accounts | |
| Account.arel_table | |
| end | |
| def subscriptions | |
| Subscription.arel_table | |
| end | |
| def charges | |
| Charge::Base.arel_table | |
| end | |
| def users | |
| User.arel_table | |
| end | |
| # Attempt to write query in Arel, it is working, but less readable | |
| def arel_scope | |
| Account | |
| .joins(:owner) | |
| .join(subscriptions, Arel::Nodes::OuterJoin).on((subscriptions[:account_id].eq(accounts[:id])).or(subscriptions[:id].eq(nil))) | |
| .join(charges, Arel::Nodes::OuterJoin).on((charges[:subscription_id].eq(subscriptions[:id])).or(charges[:id].eq(nil)).and(Charge::Base.resources.where_values).and(Charge::Base.with_status_new.where_values)) | |
| .group(accounts[:id], users[:balance_limit]) | |
| .having("coalesce(sum(charges.amount),0) <= users.balance_limit") | |
| end |
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